package com.example.utils.util.Imageurl;


import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileOutputStream;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * TODO
 *
 * @ClassName Getpic
 * @Author xiaojiang
 * @Date 2021/11/25 下午 17:50
 */
public class Getpic {

    public Getpic(){
    }

    public static boolean saveUrlAs(String fileUrl, String savePath)/*fileUrl网络资源地址*/
    {

        try
        {
            URL url = new URL(fileUrl);/*将网络资源地址传给,即赋值给url*/
            /*此为联系获得网络资源的固定格式用法，以便后面的in变量获得url截取网络资源的输入流*/
            HttpURLConnection connection = (HttpURLConnection)url.openConnection();
            DataInputStream in = new DataInputStream(connection.getInputStream());
            /*此处也可用BufferedInputStream与BufferedOutputStream*/
            DataOutputStream out = new DataOutputStream(new FileOutputStream("C:\\Users\\xiaojiang\\Desktop\\01.jpeg"));
            /*将参数savePath，即将截取的图片的存储在本地地址赋值给out输出流所指定的地址*/
            byte[] buffer = new byte[4096];
            int count = 0;
            while ((count = in.read(buffer)) > 0)/*将输入流以字节的形式读取并写入buffer中*/
            {
                out.write(buffer, 0, count);
            }
            out.close();/*后面三行为关闭输入输出流以及网络资源的固定格式*/
            in.close();
            connection.disconnect();
            return true;/*网络资源截取并存储本地成功返回true*/

        }
        catch (Exception e)
        {
            System.out.println("-----------" + e + "-----------" +  fileUrl + "-----------" +  savePath);
            return false;
        }
    }

    public static void main(String[] args)
    {
        Getpic pic = new Getpic();/*创建实例*/
        String  photoUrl = "https://gimg2.baidu.com/image_search/src=http%3A%2F%2Fmaterials.cdn.bcebos.com%2Fimages%2F8026039%2F8be05709e05da5cf1d91ed44a11d6702.jpeg&refer=http%3A%2F%2Fmaterials.cdn.bcebos.com&app=2002&size=f9999,10000&q=a80&n=0&g=0n&fmt=jpeg?sec=1640426447&t=95911ccf1d48c7c8c81f10e4b5d784fa";
        /*photoUrl.substring(photoUrl.lastIndexOf("/")的方法将返回最后一个符号为
         * ‘/’后photoUrl变量中的所有字符，包裹此自身符号*/
        String fileName = photoUrl.substring(photoUrl.lastIndexOf("/"));
        String filePath = "C:\\Users\\xiaojiang\\Desktop";
        /*调用函数，并且进行传参*/
        boolean flag = pic.saveUrlAs(photoUrl, filePath + fileName);
        System.out.println("Run ok!\n Get URL file " + flag);
        System.out.println(filePath);
        System.out.println(fileName);
    }



}
